The Noble Mahāyāna Sūtra “The Teaching of the Mysteries and Secrets of the Realized Ones”

In this sūtra, the narrative largely revolves around the figures of Vajrapāṇi, the yakṣa lord and constant companion of the Buddha, and the Buddha himself. In the first half of the sūtra, Vajrapāṇi gives a series of teachings on the mysteries or secrets of the body, speech, and mind of bodhisattvas and the realized ones. In the second half of the sūtra, Vajrapāṇi describes several events in the Buddha’s life: his practice of severe asceticism, his approach to the seat of awakening, his defeat of Māra, his awakening, and his turning of the wheel of Dharma. Following this, the Buddha gives a prediction of Vajrapāṇi’s future awakening as a buddha and travels to Vajrapāṇi’s abode for a meal. Interspersed throughout the sūtra are sermons, dialogues, and marvelous tales exploring a large number of topics and featuring an extensive cast of characters, including several narratives about past lives of Vajrapāṇi, Brahmā Sahāṃpati, and the Buddha himself. The sūtra concludes with the performance of two long dhāraṇīs, one by Vajrapāṇi and one by the Buddha, for the protection and preservation of the Dharma.